DELL S6000-ON User Manual

Page of 1100
command places the interface in Layer 2 mode and the show vlan command in EXEC privilege mode 
indicates that the interface is now part of the Default VLAN (VLAN 1).
By default, VLAN 1 is the Default VLAN. To change that designation, use the default vlan-id 
command in CONFIGURATION mode. You cannot delete the Default VLAN.
NOTE: You cannot assign an IP address to the Default VLAN. To assign an IP address to a VLAN that 
is currently the Default VLAN, create another VLAN and assign it to be the Default VLAN. For more 
information about assigning IP addresses, refer to 
• Untagged interfaces must be part of a VLAN. To remove an untagged interface from the Default 
VLAN, create another VLAN and place the interface into that VLAN. Alternatively, use the no 
switchport command, and Dell Networking OS removes the interface from the Default VLAN.
• A tagged interface requires an additional step to remove it from Layer 2 mode. Because tagged 
interfaces can belong to multiple VLANs, remove the tagged interface from all VLANs using the no 
tagged interface command. Only after the interface is untagged and a member of the Default 
VLAN can you use the no switchport command to remove the interface from Layer 2 mode. For 
Example of Configuring an Interface for Layer 2 Belonging to the Default VLAN
Dell(conf)#interface tengigabitethernet 1/2/1
Dell(conf-if)#no shut
Dell(conf-if)#switchport
Dell(conf-if)#show config
!
interface TenGigabitEthernet 1/2/1
  no ip address
  switchport
  no shutdown
Dell(conf-if)#end
Dell#show vlan
Codes: * - Default VLAN, G - GVRP VLANs
  NUM  Status  Q Ports
* 1    Active  U Te 1/2/1
                T Te 1/1/1
Port-Based VLANs
Port-based VLANs are a broadcast domain defined by different ports or interfaces. In Dell Networking OS, 
a port-based VLAN can contain interfaces from different line cards within the chassis. Dell Networking OS 
supports 4094 port-based VLANs.
Port-based VLANs offer increased security for traffic, conserve bandwidth, and allow switch 
segmentation. Interfaces in different VLANs do not communicate with each other, adding some security 
to the traffic on those interfaces. Different VLANs can communicate between each other by means of IP 
routing. Because traffic is only broadcast or flooded to the interfaces within a VLAN, the VLAN conserves 
bandwidth. Finally, you can have multiple VLANs configured on one switch, thus segmenting the device.
Interfaces within a port-based VLAN must be in Layer 2 mode and can be tagged or untagged in the 
VLAN ID.
Virtual LANs (VLANs)
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